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The study is focused on the biomechanical aspects of the anterior cruciate ligament (ACL) reconstruction procedures with an emphasis on evaluating the dynamic strain of materials commonly used for this purpose. Separate and multiple, equally tensioned strands of hamstring grafts used for the reconstruction of the ACL were biomechanically tested and compared(More)
Patients treated for knee disorders were included in this study. They were examined clinically (Lequesne and Tegner scores) and by standard X-ray investigation. Patients underwent a surgical procedure, either arthroscopy or knee replacement. At the initial phase of surgery, a sample of cartilage was taken for laboratory examination. Progression of the(More)
For biodegradable porous scaffolds to have a potential application in cartilage regeneration, they should enable cell growth and differentiation and should have adequate mechanical properties. In this study, our aim was to prepare biocompatible scaffolds with improved biomechanical properties. To this end, we have developed foam scaffolds from(More)
The potential of novel scaffold containing sodium hyaluronate, type I collagen, and fibrin was investigated in the regeneration of osteochondral defects in miniature pigs. Both autologous chondrocyte-seeded scaffolds and non-seeded scaffolds were implanted into two defects located in the non-weight-bearing zone of the femoral trochlea (defect A was located(More)
Chronic lateral ankle instability causes significant problems in physical activity and accelerates development of osteoarthritic changes. The results of treatment for chronic ankle instability are often meets controversial. A surgical reconstruction of ATFL as described in this paper was performed during the period 1997–2005 on 47 patients (26 male, 21(More)
The authors analyze one of the new therapeutic approaches - the use of autologous growth factors. Because the chemical structure of these proteins and their involvement in many functions of the organism affect the whole range of tissues, with a possibility to use them in human medicine. Growth factors, such as platelet-derived growth factor, transforming(More)
PURPOSE OF THE STUDY The authors describe the therapeutic utilization of separated/isolated autologous growth factors in semiconservative treatment of type III injury to the ankle ligamentous complex. MATERIAL Between October 2004 and March 2005 a group of 11 patients, two women and nine men, aged 18 to 41 (average, 25.09) years with acute injury to the(More)
PURPOSE OF THE STUDY The aim of this study was to present the results of treatment of deep chondral defects of the patella by transplantation of a solid chondral graft formed by autologous cultured chondrocytes. MATERIAL AND METHODS Indications for autologous chondrocyte implantation most frequently included acute trauma to the knee, particularly the(More)
PURPOSE OF THE STUDY The authors present the results of surgical treatment of talar dome cartilage defects. They used the transplantation of autologous cultured chondrocytes in the form of a solid chondral graft. MATERIAL AND METHODS Patients with chondral lesions categorized as grades II to IV by the Anderson classification or as grades II to IV by the(More)
The present article introduces a novel method of characterizing the macromechanical cartilage properties based on dynamic testing. The proposed approach of instrumented impact testing shows the possibility of more detailed investigation of the acting dynamic forces and corresponding deformations within the wide range of strain rates and loads, including the(More)